After I had cleared and excavated the proposed site for concreting, I began boxing for the slab using 90mm x 35mm pine. To find the correct height for the boxing I used a rotating laser level. The height of the boxing was determined by the
existing concrete.
Once the corners fixed at the correct height, I ran out a string line from on end of boxing to the other in the centre of the timber in order to keep boxing straight. Then using a rule the length off timber was set to the level height.
Now that the boxing is straight and level, I ran a string line across the centre of the boxed area. Then using a length of timber the same size as boxing (90mm x 35mm) I screeded the boxed area adding or removing dirt as needed so that it a the same depth all over.
Now that the boxed area is screeded to the correct depth (ie 90mm) the reo is added and a height peg is knocked in the centre of boxed area.
Time for the concrete!
The concrete was barrowed and placed in boxed area. I created a "beam" through the centre of the boxed area then screeded the concrete in two sections.
Continued to place concrete into boxed area and screeded.
Once all the concrete had been placed and screeded its time to run the float over the finished surface.
Finished off by doing edges with an edging tool and fixing up any ruff marks with steel float.
Finished!
